Preparation of Dendrobium officinale Polysaccharide by Lactic Acid Bacterium Fermentation and Its Protective Mechanism against Alcoholic Liver Damage in Mice.
J Agric Food Chem
; 72(31): 17633-17648, 2024 Aug 07.
Article
in En
| MEDLINE
| ID: mdl-39051975
ABSTRACT
Dendrobium officinale polysaccharide (DP) was prepared with lactic acid bacterium fermentation to overcome the large molecular weight and complex structure of traditional DP for improving its functional activity and application range in this work. The structure was analyzed, and then the functional activity was evaluated using a mouse model of alcoholic liver damage. The monosaccharide compositions were composed of four monosaccharides arabinose (0.13%), galactose (0.50%), glucose (24.38%), and mannose (74.98%) with a molecular weight of 2.13 kDa. The connection types of glycosidic bonds in fermented D. officinale (KFDP) were â4)-ß-D-Manp(1â, â4)-ß-Glcp(1â, ß-D-Manp(1â, and ß-D-Glcp(1â. KFDP exhibited an excellent protective effect on alcoholic-induced liver damage at a dose of 80 mg/kg compared with polysaccharide separated and purified from D. officinale without fermentation (KDP), which increased the activity of GSH, GSH-Px, and GR and decreased the content of MDA, AST, T-AOC, and ALT, as well as regulated the level of IL-6, TNF-α, and IL-1ß to maintain the normal functional structure of hepatocytes and retard the apoptosis rate of hepatocytes. The results proved that fermentation degradation is beneficial to improving the biological activity of polysaccharides. The potential mechanism of KFDP in protecting alcoholic liver damage was inhibiting the expression of miRNA-150-5p and targeting to promote the expression of Pik3r1. This study provides an important basis for the development of functional foods.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polysaccharides
/
Dendrobium
/
Fermentation
/
Liver
/
Liver Diseases, Alcoholic
Limits:
Animals
/
Humans
/
Male
Language:
En
Journal:
J Agric Food Chem
/
J. agric. Food chem
/
Journal of agricultural and food chemistry
Year:
2024
Document type:
Article
Affiliation country:
China
Country of publication:
Estados Unidos